Originally Posted by sgtjoe
Any thoughts as to why my gray water tank takes a long time to empty??
Hope that you do empty your black water tank before the grey ones to start with !
When emptying, make sure you have some ventilation in the coach; since the black water tank has a vent over it, that tank empties fast; if you opened a window or a ceiling ventilation, the fresh air coming in will help emptying and will rinse the crap left by emptying your black water tank first.